Arbor housing



FIG. 1 is a side rear perspective view showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a side elevational view;

FIG. 4 is a front elevational view; and

FIG. 5 is a cross sectional view of FIG. 4 thereof. 

The ornamental design for a arbor housing, as shown. 